<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input
            placeholder="请输入内容"
            v-model="queryInfo.query"
            clearable
            @clear="getUserList"
          >
            <el-button
              slot="append"
              icon="el-icon-search"
              @click="getUserList"
            ></el-button> </el-input
        ></el-col>
        <el-col :span="4">
          <el-button type="primary" @click="dialogVisible = true"
            >添加用户</el-button
          >
        </el-col>
      </el-row>

      <!-- 用户列表区域 -->
      <el-table :data="userlist" border stripe>
        <!--添加索引列 -->
        <el-table-column type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态" prop="mg_state">
          <template slot-scope="scope">
            <el-switch
              v-model="scope.row.mg_state"
              @change="userStateChanged(scope.row)"
            >
            </el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作">
          <template slot-scope="scope">
            <!-- {{scope.row}} 获取一行里的所有数据-->
            <!-- 修改按钮 -->
            <el-button
              type="primary"
              icon="el-icon-edit"
              circle
              @click="showEditDialog(scope.row.id)"
            ></el-button>
            <!-- 删除按钮 -->
            <el-button
              type="danger"
              icon="el-icon-delete"
              circle
              @click="removeUserById(scope.row.id)"
            ></el-button>
            <!-- 分配角色按钮 -->
            <el-tooltip
              effect="dark"
              content="分配角色"
              placement="top"
              :enterable="false"
            >
              <el-button
                type="warning"
                icon="el-icon-setting"
                circle
                @click="setRole(scope.row)"
              ></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      >
      </el-pagination>
    </el-card>

    <!-- 添加用户的对话框 -->
    <el-dialog
      title="添加用户"
      :visible.sync="dialogVisible"
      width="50%"
      @close="addDialogClosed"
    >
      <el-form
        :model="addForm"
        :rules="addFormrules"
        ref="addFormRef"
        label-width="70px"
      >
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="dialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改用户的对话框 -->
    <el-dialog
      title="修改用户"
      :visible.sync="editDialogVisible"
      width="50%"
      @close="editDialogClosed"
    >
      <el-form
        :model="editForm"
        :rules="editFormrules"
        ref="editFormRef"
        label-width="70px"
      >
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机号" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 分配角色的对话框 -->
    <el-dialog
      title="分配角色"
      :visible.sync="setRoledialogVisible"
      width="50%"
      @close="setRoleDialogClosed"
    >
      <div>
        <p>当前的用户： {{ userinfo.username }}</p>
        <p>当前的角色： {{ userinfo.role_name }}</p>
        <p>
          分配新角色：
          <el-select v-model="selectRoleId" placeholder="请选择">
            <el-option
              v-for="item in rolesList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id"
            >
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoledialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo"
          >确 定</el-button
        >
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    //验证邮箱的规则
    var checkEmail = (rule, value, cb) => {
      //验证邮箱的正则表达式
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
      if (regEmail.test(value)) {
        //合法的邮箱
        return cb()
      } else cb(new Error('请输入合法的邮箱'))
    }

    //验证手机号的规则
    var checkMobile = (rule, value, cb) => {
      //验证手机号的正则表达式
      const regMobile = /^(0|86|17951)?(13[0-9]|15[0123456789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
      if (regMobile.test(value)) {
        return cb()
      } else cb(new Error('请输入合法的手机号'))
    }

    //获取用户列表的参数对象
    return {
      queryInfo: {
        query: '',
        pagenum: 1, //当前的页数
        pagesize: 2 //当前每页显示多少数据
      },
      userlist: [],
      total: 0,

      //控制添加用户对话框的显示与隐藏
      dialogVisible: false,
      //控制修改用户对话框的显示与隐藏
      editDialogVisible: false,
      //添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      //修改用户的表单数据
      editForm: {},
      //添加表单的验证规则对象
      addFormrules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          {
            min: 3,
            max: 10,
            message: '用户名的长度在3-10个字符',
            trigger: 'blur'
          }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          {
            min: 6,
            max: 15,
            message: '密码的长度在6-15个字符',
            trigger: 'blur'
          }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      //修改表单的验证规则对象
      editFormrules: {
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      // 控制分配角色对话框的显示与隐藏
      setRoledialogVisible: false,
      // 需要被分配角色的用户信息
      userinfo: {},
      // 所有的角色的数据列表
      rolesList: [],
      //选中的角色id值
      selectRoleId: '',
    }
  },
  created() {
    console.log('created')
    console.log(this.dialogVisible)
    this.getUserList()
  },
  methods: {
    async getUserList() {
      const { data: res } = await this.$http.get('users', {
        params: this.queryInfo
      })
      console.log(res)
      if (res.meta.status == 200) {
        this.userlist = res.data.users
        this.total = res.data.total
      } else return this.$message.error('获取用户列表失败')
    },

    //监听 pagesize 改变的事件(每页显示多少条数据)
    handleSizeChange(newsize) {
      // console.log(newsize)
      this.queryInfo.pagesize = newsize
      this.getUserList()
    },

    //监听页码值改变的事件
    handleCurrentChange(newPage) {
      // console.log(newsize)
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    //监听 switch 开关状态的改变
    async userStateChanged(userinfo) {
      console.log(userinfo)
      const { data: res } = await this.$http.put(
        `users/${userinfo.id}/state/${userinfo.mg_state}`
      )
      if (res.meta.status != 200) {
        this.$message.error('更新用户状态失败')
        this.userinfo.mg_state = !this.userinfo.mg_state
      } else this.$message.success('更新用户状态成功')
    },

    //监听添加用户对话框的关闭时间
    addDialogClosed() {
      this.$refs.addFormRef.resetFields()
    },
    //监听修改用户对话框的关闭时间
    editDialogClosed() {
      this.$refs.editFormRef.resetFields()
    },

    //点击按钮， 添加新用户
    addUser() {
      this.$refs.addFormRef.validate(async valid => {
        // console.log(valid)
        if (!valid) return
        //后台请求数据
        else {
          const { data: res } = await this.$http.post('users', this.addForm)
          console.log(res)
          if (res.meta.status !== 201) {
            this.$message.error('添加用户失败')
          } else {
            this.$message.success('添加用户成功!')
            //隐藏添加用户的对话框
            this.dialogVisible = false
            //重新获取用户列表数据
            this.getUserList()
          }
        }
      })
    },
    //展示编辑用户的对话框
    async showEditDialog(id) {
      this.editDialogVisible = true
      // console.log(id)
      const { data: res } = await this.$http.get('users/' + id)
      if (res.meta.status !== 200)
        return this.$message.error('查询用户信息失败！')
      else {
        this.editForm = res.data
        this.editDialogVisible = true
      }
    },

    //修改用户信息并提交
    editUserInfo() {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return
        //发起修改用户信息的数据请求
        else {
          const { data: res } = await this.$http.put(
            'users/' + this.editForm.id,
            { email: this.editForm.email, mobile: this.editForm.mobile }
          )
          console.log(res)
          if (res.meta.status !== 200) {
            this.$message.error('更新用户信息失败')
          } else {
            //隐藏添加用户的对话框
            this.editDialogVisible = false
            //重新获取用户列表数据
            this.getUserList()
            //提示信息
            this.$message.success('更新用户成功!')
          }
        }
      })
    },
    //根据id删除对应的用户信息
    async removeUserById(id) {
      console.log(id)
      //弹框询问用户是否删除数据
      const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)

      // 如果用户点击确定， 返回值confirm
      // 如果用户取消了删除， 则返回值为 cancel
      // console.log(confirmResult)
      if (confirmResult !== 'confirm') return this.$message.info('已取消删除')
      else {
        //后台请求删除接口
        const {data:res} = await this.$http.delete('users/' + id)
        if (res.meta.status !==200) return this.$message.error('删除用户失败！')
        else {
          this.$message.success('删除用户成功')
          this.getUserList()
        }
      }
    },
    // 展示分配角色的对话框
    async setRole(userinfo) {
        this.userinfo = userinfo
        // 在展示对话框之前， 获得所有角色的列表
        const {data: res} = await this.$http.get('roles')
        if (res.meta.status !==200 ) return this.$message.error('获取角色列表失败！')
        else {
            this.rolesList = res.data
            this.setRoledialogVisible = true
        }

    },
    //点击确定按钮， 分配角色
    async saveRoleInfo() {
        // this.selectRoleId默认是false, 如果取反之后为true, 说明用户没有选择角色
        if (!this.selectRoleId) return this.$message.error('请选择要分配的角色！')
        else {
          const {data: res} = await this.$http.put(`users/${this.userinfo.id}/role`, {rid: this.selectRoleId})
          if (res.meta.status !==200 ) return this.$message.error('更新角色失败！')
          else {
            this.$message.success('更新角色成功')
            this.getUserList()
            this.setRoledialogVisible = false
          }
        }
    },
    // 监听分配角色对话框的关闭事件
    setRoleDialogClosed() {
        this.selectRoleId = ''
        this.userinfo = {}
    }
  }
}
</script>

<style scoped></style>
